Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

The nasion-sella reference line in cephalometry: a methodologic study.

H Pancherz, K Hansen

American Journal of Orthodontics

|November 1, 1984

Summary

This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Closed-loop acoustic stimulation modified by cathodal tDCS is beneficial for retention.

bioRxiv : the preprint server for biology·2026

Same author

Electron Affinities of C_{60} and C_{70} and Cooling of Their Anions.

Physical review letters·2025

Same author

Electric-dipole-momentum sensitive Coulomb explosion in doubly ionized CO dimer and trimer: An environmental effect at molecular-scale.

The Journal of chemical physics·2025

Same author

The stabilization of cyanonaphthalene by fast radiative cooling.

Nature communications·2024

Same author

Asymptotic analysis of acoustic black hole effect in cylindrical shells.

The Journal of the Acoustical Society of America·2024

Same author

Fungal Planet description sheets: 1550-1613.

Persoonia·2024

Same journal

Recent advances in bacterial chemotherapy; the sulfonamides.

American journal of orthodontics·2010

Same journal

Factors modifying head form in man.

American journal of orthodontics·2010

Same journal

The advisability of extraction as a therapeutic aid in orthodontics; affirmative.

American journal of orthodontics·2010

Same journal

Lesions of the mandible; secondary carcinoma of the mandible.

American journal of orthodontics·2010

Same journal

Salivary gland tumors.

American journal of orthodontics·2010

Same journal

Extensive ameloblastoma.

American journal of orthodontics·2010

See all related articles

Registration errors in the nasion-sella reference line (NSL) significantly impact head film measurements. The anatomical landmark (L) method showed less error than the stable skull structure (S) method.

Area of Science:

Cephalometric analysis
Orthodontic imaging

Background:

The nasion-sella reference line (NSL) is crucial for cephalometric analysis.
Accurate NSL registration is vital for reliable head film measurements.

Purpose of the Study:

To evaluate the impact of NSL registration error on angular and linear head film measurements.
To compare two methods of NSL construction: anatomical landmarks (L method) vs. stable skull structures (S method).

Main Methods:

Double registrations of 16 lateral head film pairs were performed by two observers.
Comparison of NSL registration errors between the L method and the S method.
Analysis of interobserver variability in NSL landmark identification.

Main Results:

Related Experiment Videos

NSL registration error significantly affected both angular and linear cephalometric measurements.
The S method exhibited a larger registration error compared to the L method.
Significant interobserver differences were noted, particularly with the S method.

Conclusions:

Clinicians must recognize NSL registration error in radiographic analysis to prevent diagnostic misinterpretations.
Misjudging the NSL can affect treatment planning and outcome evaluation.
The L method is recommended for longitudinal growth studies due to its lower registration error.